Your bee can start to show wobble at any point in its life, and any offspring could be low or high wobble... It is completely unpredictable, and can show up at anytime. Most spiders don't show it unless they are stressed or very excited. As I said before 9 times out of 10 it never causes any issues... The issue is that when it does people freak out. I personally feel that it is one of the most over blown things in this hobby.
It can have a negative impact on them but it is extremely rare for that to be the case. Basically it has to be bad enough that they cannot eat on their own.
The wobble is part of the spiders genetics ALL spiders/spider combos have it. Most simply don't display noticeable symptoms.